Nut-lock.



UNITED STATES PATENT OFFICE.

CADYVELL l3. SNYDER, OF OHIGAGQILLINOIS.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 679,435, dated July 30, 1901.

Application filed April 2, 1901. Serial No. 54,044. (No model.)

To all whom, it may concern/.-

Be it known that I, OADWELL B. SNYDER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in NutLocks; and I do declare thefollowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention has relation to improvements in nut-locks; and it consists in the novel construction, combination, and arrangement of the same, whereby a nut on a bolt is securely fastened thereto and prevented from accidental displacement or becoming disengaged or loosened from said bolt. At the same time the nut can be readily unlocked when it is desired to remove the nut from the bolt and without injury to the nut, bolt, plate, or key, all as will be hereinafter more fully explained, and particularly pointed out in the appended claim.

The annexed drawings, to which reference is made, fully illustrate my invention, in which- Figure 1 represents a vertical crosssectional view of a railway-rail, showing my device applied thereto. Fig. 2 is a face View of the grooved plate. Fig. 3 is a side view of the same, and Fig. 4 is a perspective view of the locking plate or key detached from the grooved plate and nut.

Referring by letter to the accompanying drawings, A designates the locking device, which is composed of two parts C6 and Z). The rectangular plate a is provided with an opening a for the passage of the bolt d and a groove 6 across its face and above said opening, while the lower portion f is constructed with a horizontal flat surface 9 for a pur pose presently explained. The detachable plate or key is constructed of metal and comprises a horizontal flange h, a vertical flange t and two end projections jj, forming twin lugs that extend beyond the body of the key and form a part of the vertical flange aforesaid. These two plates (0 and h are connected with one another in the following manner in looking the nut to the bolt: The plate a is placed in position upon the bolt with its groove 6 facing outward and the lower end resting squarely upon the flange, as at g, after which the nut is screwed upon the bolt and up to and against the face of the plate a,'thus closing the groove partially in said plate, and the key is then inserted from either side of said plate into the groove, after which the twin lugs are bent against the sides of the plate a, thus preventing the key from lateral movement, while the nut prevents outward movement, thereby firmly securing the nut, key, and plate to one another.

It will be observed from the above description, when taken in connection with the annexed drawings, that when the nut and plate a are in place upon the bolt the nut partially closes the groove, providing a deep and secure seat for the flange i of the key in said groove, and that the twin lugs or extensions being extended laterally from the body of the key and in line with the {flange i said key can be readily inserted in the groove or seat from either side of the plate and nut, and the flat surface g, resting upon the flange, prevents said plate from turning.

In unlocking the device the operator simply straightens the bent twin extensions or lugs, bringing them in line with the flange i, when the key can readily and quickly be withdrawn from the groove, thus freeing the nut, when the latter can be unscrewed from the bolt, and a device as herein described is simple in operation, durable, and at the same time cheap to manufacture.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

In a nut-lock, the combination with the nut and bolt, of the plate at having its end g engaging the flange, a perforation c and the groove 6, the latter partially closed by the nut; the key, comprising the horizontal flange h and vertical flange 2', the latter extending beyond the body of the key, forminghorizontally opposite twin lugs j, j, said key adapted to be passed into the groove from either side of the plate and the two lugs bent to engage the two opposite sides of said plate, all as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

OADWELL lLSNYDER. Witnesses:

SMITH W. BRAND, J. R. PROUTY. 

